<style>
  .header {
    height: 1.4rem;
    padding: 0 0.3rem;
    display: flex;
    align-items: center;
    flex: 1;
  }
  .header .header-img-1 {
    width: 0.96rem;
    height: 1.08rem;
    margin-right: 0.42rem;
  }
  .header .header-img-2 {
    width: 2.62rem;
    height: 0.96rem;
  }
  .header .header-img-3 {
    width: 1.68rem;
    height: 0.54rem;
    margin-left: auto;
  }
</style>

<header class="header flex">
  <img src="./img/header-1.png" alt="" class="header-img-1">
  <img src="./img/header-2.png" alt="" class="header-img-2">
  <img src="./img/header-3.png" alt="" class="header-img-3">
</header>